TY  - EJOU
AU  - Li, Baohua 
AU  - Dai, Yuanjun 
AU  - Cui, Jingan 
AU  - Wang, Cong 
AU  - Shi, Kunju 

TI  - Influence of the Blade Bifurcated Tip on the Correlation between Wind Turbine Wheel Vibration and Aerodynamic Noise
T2  - Fluid Dynamics \& Materials Processing

PY  - 2023
VL  - 19
IS  - 12
SN  - 1555-2578

AB  - To reduce the vibration and aerodynamic noise of wind turbines, a new design is proposed relying on a blade with
a bifurcated apex or tip. The performances of this wind turbine wheel are tested at the entrance of a DC (directaction) wind tunnel for different blade tip angles and varying centrifugal force and aerodynamic loads. The test
results indicate that the bifurcated apex can reduce the vibration acceleration amplitude and the vibration frequency of the wind wheel. At the same time, the bifurcated apex can lower the maximum sound pressure level
corresponding to the rotating fundamental frequency of the wind wheel. According to all these findings, the tip
angle of the bifurcated apex is the main factor enhancing the effect of the modification.
KW  - Wind turbine; bifurcated apex; wind wheel vibration; aerodynamic noise

DO  - 10.32604/fdmp.2023.029583